Features - Craftsman 315.279570 Owner's Manual

CONVERSION PAD
The conversion pad supplied with your sander
converts the standard sanding pad from use with
pressure sensitive sanding discs to allow for use with
velcro type sanding discs.
RANDOM ORBIT
The random orbit motion provides overlapping sanding
movements by combining orbital and turning motion.
These overlapping sanding movements provide fast
cutting action with excellent sanding results.
ELECTRICAL CONNECTION
Your sander has a precision built electric motor. It
should be connected to a power supply that is 120
volts, 60 Hz, AC only (normal household current).
Do not operate this tool on direct current (DC). A
substantial voltage drop will cause a loss of power and
the motor will overheat. If your tool does not operate
when plugged into an outlet, double-check the power
supply.
APPLICATIONS
(Use only for the purposes listed below)
Sanding on wood surfaces.
Removing rust from and sanding steel surfaces.
WARNING:
Your sander should never be
connected to power supply when you are assem-
bling parts, making adjustments, assembling or
replacing sanding disc, cleaning, or when not in
use. Disconnecting your sander will prevent
accidental starting that could cause serious
personal injury.
The backing pad on your sander provides the
capability to use sanding discs with pressure sensitive
adhesive backing material. You also receive a
conversion pad which allows use of sanding discs
with velcro type backing material.

FEATURES

DOUBLE INSULATION
Double insulation is a concept in safety, in electric
power tools, which eliminates the need for the usual
three-wire grounded power cord. All exposed metal
parts are isolated from internal metal motor
components with protecting insulation. Double
insulated tools do not need to be grounded.
IMPORTANT
Servicing of a tool with double insulation requires
extreme care and knowledge of the system and
should be performed only by a qualified service
technician. For service we suggest you return the tool
to your nearest Sears Store for repair. Always use
original factory replacement parts when servicing.
WARNING
sander to make you careless. Remember that a
careless fraction of a second is sufficient to inflict
severe injury.
OPERATION
SANDING DISC SELECTION
Selecting the correct size grit and type sanding disc is
an extremely important step in achieving a high quality
sanded finish. Aluminum oxide, silicon carbide, and
other synthetic abrasives are best for power sanding.
Natural abrasives, such as flint and garnet are too soft
for economical use in power sanding.
In general, coarse grit will remove the most material
and finer grit will produce the best finish in all sanding
operations. The condition of the surface to be sanded
will determine which grit will do the job. If the surface is
rough, start with a coarse grit and sand until the
surface is uniform. Medium grit may then be used to
remove scratches left by the coarser grit and finer grit
used for finishing of the surface. Always continue
sanding with each grit until surface is uniform.
8
:
Do not allow familiarity with your